72462240 has 72 divisors (see below), whose sum is σ = 247282308. Its totient is φ = 19322880.

The previous prime is 72462239. The next prime is 72462277. The reversal of 72462240 is 4226427.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72386064 + 76176 = 8508^2 + 276^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23721 + ... + 26600.

Almost surely, 2^72462240 is an apocalyptic number.

It is an amenable number.

72462240 is an abundant number, since it is smaller than the sum of its proper divisors (174820068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72462240 is a wasteful number, since it uses less digits than its factorization.

72462240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50342 (or 50331 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 72462240 is about 8512.4755506257. The cubic root of 72462240 is about 416.9051420625.

Adding to 72462240 its reverse (4226427), we get a palindrome (76688667).

The spelling of 72462240 in words is "seventy-two million, four hundred sixty-two thousand, two hundred forty".